TARGET = exp
######################################
# building variables
######################################
# debug build?
DEBUG = 1
# optimization
OPT = -Og
#######################################
# paths
#######################################
# Build path
BUILD_DIR = build
######################################
# source(修改这里以增加或减少文件)
######################################
# C sources
C_SOURCES =  \
Core/Src/main.c \
Core/Src/syscalls.c \
Core/Src/system_stm32f4xx.c \
Bsp/Src/led.c \
Bsp/Src/delay.c \
Bsp/Src/iwdg.c \
Bsp/Src/softI2c.c \
Bsp/Src/at24cxx.c \
Bsp/Src/sys.c \
Bsp/Src/spi.c \
Bsp/Src/w25qxx.c \
Bsp/Src/sdram.c \
Bsp/Src/my_malloc.c \
Bsp/Src/nvic.c \
Bsp/Src/usart.c \
Bsp/Src/nand.c \
Bsp/Src/nandtester.c \
Bsp/Src/ftl.c \
$(wildcard RT_thread/Src/*.c) \
RT_thread/libcpu/arm/cortex-m4/cpuport.c 

# ASM sources
ASM_SOURCES =  \
startup_stm32f429xx.s

# ASM sources
ASMM_SOURCES = \
RT_thread/libcpu/arm/cortex-m4/context_gcc.S

#######################################
# binaries
#######################################
PREFIX = arm-none-eabi-
# The gcc compiler bin path can be either defined in make command via GCC_PATH variable (> make GCC_PATH=xxx)
# either it can be added to the PATH environment variable.
ifdef GCC_PATH
CC = $(GCC_PATH)/$(PREFIX)gcc
AS = $(GCC_PATH)/$(PREFIX)gcc -x assembler-with-cpp
CP = $(GCC_PATH)/$(PREFIX)objcopy
SZ = $(GCC_PATH)/$(PREFIX)size
else
CC = $(PREFIX)gcc
AS = $(PREFIX)gcc -x assembler-with-cpp
CP = $(PREFIX)objcopy
SZ = $(PREFIX)size
endif
HEX = $(CP) -O ihex
BIN = $(CP) -O binary -S
#######################################
# CFLAGS
#######################################
# cpu
CPU = -mcpu=cortex-m4
# fpu
FPU = -mfpu=fpv4-sp-d16
# float-abi
FLOAT-ABI = -mfloat-abi=soft # hard-->soft
# mcu
MCU = $(CPU) -mthumb $(FPU) $(FLOAT-ABI)
# macros for gcc
# AS defines
AS_DEFS = 
# C defines
C_DEFS = 

# AS includes
AS_INCLUDES = 

# C includes
C_INCLUDES =  \
-ICore/Inc \
-IBsp/Inc \
-IRT_thread/Inc

# compile gcc flags
ASFLAGS = $(MCU) $(AS_DEFS) $(AS_INCLUDES) $(OPT) -Wall -fdata-sections -ffunction-sections
CFLAGS += $(MCU) $(C_DEFS) $(C_INCLUDES) $(OPT) -Wall -fdata-sections -ffunction-sections
ifeq ($(DEBUG), 1)
CFLAGS += -g -gdwarf-2
endif
# Generate dependency information
CFLAGS += -MMD -MP -MF"$(@:%.o=%.d)"
#######################################
# LDFLAGS
#######################################
# link script
LDSCRIPT = stm32f429igtx_flash.ld
# libraries
LIBS = -lc -lm -lnosys 
LIBDIR = 
# -specs=nano.specs 如果需要支持浮点数打印 应当移除这部分 会导致最终文件变大
LDFLAGS = $(MCU) -specs=nano.specs -T$(LDSCRIPT) $(LIBDIR) $(LIBS) -Wl,-Map=$(BUILD_DIR)/$(TARGET).map,--cref -Wl,--gc-sections

# 增加长整数打印支持
LDFLAGS += -u _printf_lld

# default action: build all
all: $(BUILD_DIR)/$(TARGET).elf $(BUILD_DIR)/$(TARGET).hex $(BUILD_DIR)/$(TARGET).bin
#######################################
# build the application
#######################################
# list of objects
OBJECTS = $(addprefix $(BUILD_DIR)/,$(notdir $(C_SOURCES:.c=.o)))
vpath %.c $(sort $(dir $(C_SOURCES)))
# list of ASM program objects
OBJECTS += $(addprefix $(BUILD_DIR)/,$(notdir $(ASM_SOURCES:.s=.o)))
vpath %.s $(sort $(dir $(ASM_SOURCES)))
OBJECTS += $(addprefix $(BUILD_DIR)/,$(notdir $(ASMM_SOURCES:.S=.o)))
vpath %.S $(sort $(dir $(ASMM_SOURCES)))
$(BUILD_DIR)/%.o: %.c Makefile | $(BUILD_DIR) 
	$(CC) -c $(CFLAGS) -Wa,-a,-ad,-alms=$(BUILD_DIR)/$(notdir $(<:.c=.lst)) $< -o $@
$(BUILD_DIR)/%.o: %.s Makefile | $(BUILD_DIR)
	$(AS) -c $(CFLAGS) $< -o $@
$(BUILD_DIR)/%.o: %.S Makefile | $(BUILD_DIR)
	$(AS) -c $(CFLAGS) $< -o $@
$(BUILD_DIR)/$(TARGET).elf: $(OBJECTS) Makefile
	$(CC) $(OBJECTS) $(LDFLAGS) -o $@
	$(SZ) $@
$(BUILD_DIR)/%.hex: $(BUILD_DIR)/%.elf | $(BUILD_DIR)
	$(HEX) $< $@
$(BUILD_DIR)/%.bin: $(BUILD_DIR)/%.elf | $(BUILD_DIR)
	$(BIN) $< $@	
$(BUILD_DIR):
	mkdir $@
#######################################
# clean up
#######################################
ifeq ($(OS), Windows_NT)
clean:
	rmdir .\build\/s /q
else
clean:
	rm -rf ./build
endif
#######################################
# dependencies
#######################################
-include $(wildcard $(BUILD_DIR)/*.d)
# *** EOF ***
